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8-Channel 1TB DVR with (8) 600TVL SVAT Series Cameras
  • Defender
  • Model 21378
  • Internet #206451003
  • Store SO SKU #

8-Channel 1TB DVR with (8) 600TVL SVAT Series Cameras

Discontinued Model:

Model # 21025

Internet #203267390

Defender 8-Channel 500GB Hard Drive Surveillance System with (8) 600 TVL Cameras

Discontinued Defender

8-Channel 500GB Hard Drive Surveillance System with (8) 600 TVL Cameras

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Product Overview

Trust Defender to make thieves and vandals think twice about approaching your property. Defender systems function just like a computer, with a mouse for pointing and clicking and an intuitive icon-based menu for easy set up and use. View anytime, anywhere with remote viewing via internet, smartphone, and tablet and receive email alerts, with photo, when motion is detected on your property. Our 1 Step Remote Viewing software application auto-networks your DVR in less than 5 minutes, available as a free download for PC and Mac. Record over 2 years’ worth of footage on the included 500GB hard drive. Eight all-weather cameras deliver clear, ultra hi-res video with 600TVL for maximum surveillance indoors and outdoors. 36IR LEDs allow for 100 ft. of automatic night vision. Anti-vandal mount ensures cameras cannot be tampered with and 65 ft. of cable allows for greater flexibility in mounting around your home or business. Don’t give thieves a chance. Stop them with Defender.

  • 600TVL Ultra Hi-Res cameras provide crisp and detailed video
  • Each camera comes with 65 ft. of cable allowing for greater flexibility in mounting around your home or business
  • 36IR LEDs for up to 100 ft. automatic night vision
  • View your camera footage from anywhere in the world from a PC or Smartphone, Compatible with Internet Explorer, iPhone, BlackBerry, Android, Windows Mobile, Symbian, iPad and most major tablets
  • Ultra-Resolution 600TVL cameras give a clear and detailed picture
  • Record up to 2 years of footage onto the included 500GB hard drive
  • H.264 compression maximizes your recording time while keep high-quality imagery
  • Email alerts with photo will notify you of activity or video loss
  • Customize your recording schedule with motion activated recording
  • Easy installation (mounting and wiring included)
  • Heavy duty vandal resistant mount
  • Lifetime live customer support can be reached by phone, email or chat in English, Spanish and French
  • Automatic remote viewing setup, our 1 Step Remote Viewing software application auto-networks your DVR in less than 5 minutes. Simply input your DVR?s IP address (found in the menu) into the connection program on your computer, click ?Sync to Router?, and 1 Step will automatically do the rest, This software is available as a free download for PC and Mac. Defender offers you the convenience of mobile viewing without any complicated instructions or hassle

Info & Guides

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Name 8-Channel 500GB Hard Drive Surveillance System with (8) 600 TVL Cameras ProHD 720P 8CH Security System - Eight 1.0-MP, IP67 Bullet Cameras Night Vision Smartphone Access Aero 8-Channel HD 1TB Surveillance DVR with 8 Indoor/Outdoor Cameras Aero 8-Channel HD 1TB Surveillance DVR with 8 Indoor/Outdoor Cameras
Brand Defender Amcrest Revo Revo
Ratings (84) (2) (0) (0)
Number of Cameras Included 8 8 8 8
Number of Channels 8 8 8 8
Camera Technology Analog/ Direct Analog/ Direct Analog/ Direct Analog/ Direct
Recording Resolution 2CIF/D1 - 720x240 HD-720 - 1280x720 HD-1080 - 1920x1080 HD-1080 - 1920x1080,HD-1080 - 1920x1080
Features Night Vision,Remote Monitoring Cloud Recording,HDMI Port,Multi-family,Night Vision,Remote Monitoring,USB Connection,WiFi Enabled HDMI Port,Night Vision,Remote Monitoring HDMI Port,Night Vision,Remote Monitoring
Camera Resolution 600 TVL 800 TVL 1080 TVL 1080 TVL
View Product View Product View Product View Product



Screen Size (In.)


Camera Connection
Wired Cameras
Camera Resolution
600 TVL
Camera Technology
Analog/ Direct
Camera Type
Night Vision,Remote Monitoring
Hard Drive Size
321GB to 500GB
Maximum Record Time (hrs)
Night Vision Distance (ft.)
Number of Cameras Included
Number of Channels
Recording Resolution
2CIF/D1 - 720x240
Smart Home
Smart Home Enabled
Storage Capacity
500 GB and under
Wireless Cameras

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Customer Questions & Answers

Can you use more cable than the 65 ft. they come with?

Are you limited to that length of cable? What size is the cable if we need to buy more for installarion purposes?
Asked by: Sully
Sure it just takes connector to join the cables. Easy to find
Answered by: rickinga
Date published: 2015-09-20

How hard is the system to connect it to the smart phone?

Asked by: 9741
It's not hard at all. I actually hooked it to within 10 minutes. You turn the system on. Connect it to your cable, WiFi, etc. Then you'll get an IP address in your settings screen for your system. Go to the App Store for iPhones or Android Store for Androids, download an App called ASee (there's a few other apps that can be used but it seems like this one is the most compatible), and type in your IP settings. You'll be viewing your cameras in seconds. Hopes this helps.
Answered by: MannyRookieDYIer
Date published: 2015-11-06

OK, so after 2-4 weeks recording time the disc is full. What do I need to do then?

Asked by: Buster
Nothing at all unless you want the old footage. The system automatically clears old footage and replaces it with new one. If you don't need any of the old footage, you do not need to do anything. If you do, you'll prob want to look at the instruction manual but I'm pretty sure you can connect a USB or Flash Drive and save it.
Answered by: MannyRookieDYIer
Date published: 2015-11-06

are cameras powered thru dvr cable or does each camera need power at point of mount?

Asked by: luvycoyote
power goes thru cable back to unit
Answered by: James
Date published: 2015-11-06
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Customer Reviews

8-Channel 500GB Hard Drive Surveillance System with (8) 600 TVL Cameras is rated 4.3 out of 5 by 84.
Rated 5 out of 5 by from Great Product Set up the system with no problems and worked well from first day of setup. Cameras deliver a very good picture. DVR works great and I even added sound to the audio port for one camera and it works well. good investment for the price. Support (Julie) was very knowledgable and helped me with my external remote viewing on my iphone. She was very pleasant and patient. Would reccommend this to anyone who wants a quality system for a reasonable price and good support.
Date published: 2012-12-06
Rated 5 out of 5 by from Easy setup and fair price. Great performance. I access my cameras on the tv monitors, my laptops, and from my cellphone sharing the same home network. I am trying now to access from an external network. Pictures are great and use them to record only when motion is detected. One of the cameras was not functioning after purchase. When i called defender for assistance, I sent back then faulty camera and within no time another one was delivered. GREAT SERVICES.
Date published: 2012-11-20
Rated 4 out of 5 by from Pretty good security camera system I recently installed the 8 camera system to my home in Jan 2013 after purchasing it from Home Depot. One of the camera appeared to be defective right out of the box because it provided a very hazy picture in the night IR mode. During the day the picture is crystal clear but in IR mode not so good. The other cameras were just fine in the IR mode so the one could have been a lemon. I contacted Defender CS who sent a new one out. However be aware they will charge your credit card the cost of a new camera until they receive the defective unit back. And this may take several weeks. A couple of my cables were a tad short so take this into account when selecting a mounting location for the camera in reference to where you place the DVR. Mounting the cameras can be a challenge. If the camera is mounted to a horizontal surface such as a ceiling you'll have a very limited range of motion for the tilt "up and down" fields of view due to the design of the mount. However if the camera is mounted on a vertical surface such as a wall then the tilt "up and down" coverage is more than adequate to view most areas. The cameras come painted black, so they really stood out against my earth tone colored house and not very acceptable to my HOA. Defender informed me they can be spray painted without voiding the warranty which I did. Just remember to cover the lens and electrical cable connection prior to applying the spray paint. The instruction manual is provided as a pdf on a mini CD and lacks the detail and clarity I would expect for a high tech piece of equipment. However it's adequate for the basic set up. I recommend printing out the pdf on paper so you can easily refer to it during the set up and programing. I haven't enabled the remote monitoring or the network connections yet. The cameras make a loud "click" sound when they switch from the normal to IR mode or when they detect motion to record if this option is enabled. This is probably a plus because it would let any unwelcome visitors know they're being monitored and should serve as a deterrent. Overall I'm pretty satisfied with Defender's quality and CS and so far so good but it's only been in service for less than a month. I'm wondering how well the cameras will hold up to our brutal AZ summers. Time will tell and I'll update if any problems should crop up. But for right now I'm pretty pleased with the system.
Date published: 2013-02-09
Rated 4 out of 5 by from Great Security System So far so good! The hard part of the installation is running the wires. I guess, you can't get away with that part. One thing I do need is the system SHOULD include audio built-in with the cameras. However, you can add audio (buy separately) to the system but you can ONLY add to one channel. The motion schedule is great, this feature saves disk spaces. With the security system, I now can check the viewing of my house online anytime, this gives me a peace of mind when I am away from home.
Date published: 2012-09-04
Rated 5 out of 5 by from Great Night Vision & Great Product I purchased this camera system to protect and record anyone that would try to break in or do any property damage the piece of mind that this system gives me is priceless. Easy install and hookup. I would recommend plus a great value.
Date published: 2012-11-01
Rated 5 out of 5 by from More than expected I live on a 5 acre lot with a seperate 3 car garage, a 3/2 double wide manufacuted home, and a single wide MF home being rented. After purchasing online, the equipment arrived within 4 or 5 days with standard shipping. No damage or defective items and everything is working perfectly. I have the 8 camera system and have intalled the first 4. Will need to order the 200 ft or 300 ft cable to install the other 4 on my garage and single wide but I don't foresee any problems there either. One of the features I find to be excellent is the night vision. I thought that when I purchased this system I would need to install night lights so the cameras would be able to see at night. But in pitch dark, they can see a very good distance in front. The night vision of my back patio is absolutely great! It's like seeing the pation in daylight except it appears in black and white which is no problem either. I submit two pics with this review which is 1) One of the installed cameras above the front door and 2) The view from the 4 cameras as seen through my monitor. This is an outstanding video surveillance system, worth the money spent, and is a cool new toy to have. Haven't gotten to the recording process or the online viewing capability yet but this system is great! Go get one.
Date published: 2013-10-29
Rated 5 out of 5 by from great features, good quality I am satisfied with my purchase. It arrived when it was supposed to and everything worked great. No problems. This is a good mid range system. The 600tvl cameras are very clear in daylight and the color is good. The night vision is good for about 30ft. with some light available from outside sources. If you are totally relying on the night vision infrared that comes with the camera you will only be able to see about 15 ft. The dvr has all the features you need to add better equipment later such as a pan,tilt,zoom camera. I learned after my purchase that the 700tvl cameras are the best you can get in cctv cameras and i would highly recommend them. The angle of view with these cameras are about 30ft. so if you want to cover a wide area with one camera you will need a wide angle view camera.
Date published: 2013-03-27
Rated 5 out of 5 by from Best home unit I have installed yet I have installed several CCTV security systems the past ten years, professional DVR, computer based and home appliance units. This defender system by far has been the easiest and best image quality for a home unit that I have had the pleasure of installing. There are paly back while recording limitations as expected for the price but still very workable. Even though I have retired I still get asked to install CCTV security systems in small commercial environments, the Defender brand of DVR and 600 TVL cameras will be my go to unit.
Date published: 2013-08-06
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